Tooltip follow the component

Hi all,

I'm doing a form that shows an error to the user using a Ext.Tooltip in the right side of the TextField. When I want to show the Tooltip, I call the show function and when I don't want it on screen anymore I call the hide function. Everything is fine until here.

The problem is when I resize my window and the textfield moves to another place. I want the Tooltip move together, but it continues in the same place.